Running late to school, Shinichi sees Nagai in trouble with some punks. When Shinichi steps in to help, he meets a high school student, Kimishima Kana. Shinichi and Satomi share a close moment when she tends to his injuries, but his life is about to take a sudden turn with a single phone call from his father...
but who knows what you're 
doing behind our backs?
aber wer weiß,
was du sonst so treibst?
pero quién sabe qué harás 
a espaldas de los demás.
pero a saber qué haces 
a espaldas de los demás.
mas ninguém sabe qual é a sua ainda!